/*
- * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#if CONFIG_MTRR
#include <i386/mtrr.h>
#endif
+#if HYPERVISOR
+#include <kern/hv_support.h>
+#endif
#if CONFIG_VMX
#include <i386/vmx/vmx_cpu.h>
#endif
#include <i386/tsc.h>
#include <kern/cpu_data.h>
+#include <kern/machine.h>
+#include <kern/timer_queue.h>
#include <console/serial_protos.h>
#include <machine/pal_routines.h>
#include <vm/vm_page.h>
#include <IOKit/IOHibernatePrivate.h>
#endif
#include <IOKit/IOPlatformExpert.h>
-
#include <sys/kdebug.h>
#if CONFIG_SLEEP
extern void acpi_sleep_cpu(acpi_sleep_callback, void * refcon);
-extern void acpi_wake_prot(void);
+extern void acpi_wake_prot(void);
#endif
extern kern_return_t IOCPURunPlatformQuiesceActions(void);
extern kern_return_t IOCPURunPlatformActiveActions(void);
+extern kern_return_t IOCPURunPlatformHaltRestartActions(uint32_t message);
extern void fpinit(void);
#endif
}
+#if CONFIG_SLEEP
+
+unsigned int save_kdebug_enable = 0;
+static uint64_t acpi_sleep_abstime;
+static uint64_t acpi_idle_abstime;
+static uint64_t acpi_wake_abstime, acpi_wake_postrebase_abstime;
+boolean_t deep_idle_rebase = TRUE;
+
#if HIBERNATION
struct acpi_hibernate_callback_data {
acpi_sleep_callback func;
};
typedef struct acpi_hibernate_callback_data acpi_hibernate_callback_data_t;
-unsigned int save_kdebug_enable = 0;
-static uint64_t acpi_sleep_abstime;
-
-#if CONFIG_SLEEP
static void
acpi_hibernate(void *refcon)
{
if (current_cpu_datap()->cpu_hibernate)
{
-#if defined(__i386__)
- cpu_IA32e_enable(current_cpu_datap());
-#endif
mode = hibernate_write_image();
if( mode == kIOHibernatePostWriteHalt )
{
// off
HIBLOG("power off\n");
+ IOCPURunPlatformHaltRestartActions(kPEHaltCPU);
if (PE_halt_restart) (*PE_halt_restart)(kPEHaltCPU);
}
else if( mode == kIOHibernatePostWriteRestart )
{
// restart
HIBLOG("restart\n");
+ IOCPURunPlatformHaltRestartActions(kPERestartCPU);
if (PE_halt_restart) (*PE_halt_restart)(kPERestartCPU);
}
else
cpu_datap(0)->cpu_hibernate = 0;
}
-#if defined(__i386__)
- /*
- * If we're in 64-bit mode, drop back into legacy mode during sleep.
- */
- cpu_IA32e_disable(current_cpu_datap());
-#endif
}
+
+#if CONFIG_VMX
+ vmx_suspend();
+#endif
kdebug_enable = 0;
IOCPURunPlatformQuiesceActions();
/* should never get here! */
}
-#endif /* CONFIG_SLEEP */
#endif /* HIBERNATION */
+#endif /* CONFIG_SLEEP */
extern void slave_pstart(void);
+extern void hibernate_rebuild_vm_structs(void);
+extern unsigned int wake_nkdbufs;
void
acpi_sleep_kernel(acpi_sleep_callback func, void *refcon)
unsigned int cpu;
kern_return_t rc;
unsigned int my_cpu;
- uint64_t now;
- uint64_t my_tsc;
- uint64_t my_abs;
+ uint64_t start;
+ uint64_t elapsed = 0;
+ uint64_t elapsed_trace_start = 0;
kprintf("acpi_sleep_kernel hib=%d, cpu=%d\n",
current_cpu_datap()->cpu_hibernate, cpu_number());
/* Save power management timer state */
pmTimerSave();
-#if CONFIG_VMX
- /*
- * Turn off VT, otherwise switching to legacy mode will fail
- */
- vmx_suspend();
+#if HYPERVISOR
+ /* Notify hypervisor that we are about to sleep */
+ hv_suspend();
#endif
-#if defined(__i386__)
- /*
- * If we're in 64-bit mode, drop back into legacy mode during sleep.
- */
- cpu_IA32e_disable(current_cpu_datap());
-#endif
/*
* Enable FPU/SIMD unit for potential hibernate acceleration
*/
* Will not return until platform is woken up,
* or if sleep failed.
*/
-#ifdef __x86_64__
uint64_t old_cr3 = x86_64_pre_sleep();
-#endif
#if HIBERNATION
acpi_sleep_cpu(acpi_hibernate, &data);
#else
+#if CONFIG_VMX
+ vmx_suspend();
+#endif
acpi_sleep_cpu(func, refcon);
#endif
-#ifdef __x86_64__
+ acpi_wake_abstime = mach_absolute_time();
+ /* Rebase TSC->absolute time conversion, using timestamp
+ * recorded before sleep.
+ */
+ rtc_nanotime_init(acpi_sleep_abstime);
+ acpi_wake_postrebase_abstime = start = mach_absolute_time();
+ assert(start >= acpi_sleep_abstime);
+
x86_64_post_sleep(old_cr3);
-#endif
#endif /* CONFIG_SLEEP */
#if HIBERNATION
if (current_cpu_datap()->cpu_hibernate) {
-#if defined(__i386__)
- int i;
- for (i = 0; i < PMAP_NWINDOWS; i++)
- *current_cpu_datap()->cpu_pmap->mapwindow[i].prv_CMAP = 0;
-#endif
did_hibernate = TRUE;
} else
/* update CPU microcode */
ucode_update_wake();
+#if CONFIG_MTRR
+ /* set up PAT following boot processor power up */
+ pat_init();
+#endif
+
#if CONFIG_VMX
/*
* Restore VT mode
*/
- vmx_resume();
-#endif
-
-#if CONFIG_MTRR
- /* set up PAT following boot processor power up */
- pat_init();
+ vmx_resume(did_hibernate);
#endif
/*
*/
pmMarkAllCPUsOff();
- ml_get_timebase(&now);
/* re-enable and re-init local apic (prior to starting timers) */
if (lapic_probe())
lapic_configure();
- /* let the realtime clock reset */
- rtc_sleep_wakeup(acpi_sleep_abstime);
+#if HIBERNATION
+ hibernate_rebuild_vm_structs();
+#endif
+
+ elapsed += mach_absolute_time() - start;
+ rtc_decrementer_configure();
kdebug_enable = save_kdebug_enable;
+ if (kdebug_enable == 0) {
+ if (wake_nkdbufs) {
+ start = mach_absolute_time();
+ kdebug_trace_start(wake_nkdbufs, NULL, TRUE);
+ elapsed_trace_start += mach_absolute_time() - start;
+ }
+ }
+ start = mach_absolute_time();
+
+ /* Reconfigure FP/SIMD unit */
+ init_fpu();
+ clear_ts();
+
IOCPURunPlatformActiveActions();
+#if HIBERNATION
if (did_hibernate) {
+ elapsed += mach_absolute_time() - start;
- my_tsc = (now >> 32) | (now << 32);
- my_abs = tmrCvt(my_tsc, tscFCvtt2n);
-
- KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 2) | DBG_FUNC_START,
- (uint32_t)(my_abs >> 32), (uint32_t)my_abs, 0, 0, 0);
+ KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 2) | DBG_FUNC_START, elapsed, elapsed_trace_start, 0, 0, 0);
hibernate_machine_init();
KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 2) | DBG_FUNC_END, 0, 0, 0, 0, 0);
KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 0) | DBG_FUNC_END, 0, 0, 0, 0, 0);
} else
+#endif /* HIBERNATION */
KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 0) | DBG_FUNC_END, 0, 0, 0, 0, 0);
/* Restore power management register state */
/* Restart timer interrupts */
rtc_timer_start();
- /* Reconfigure FP/SIMD unit */
- init_fpu();
-
#if HIBERNATION
-#ifdef __i386__
- /* The image is written out using the copy engine, which disables
- * preemption. Since the copy engine writes out the page which contains
- * the preemption variable when it is disabled, we need to explicitly
- * enable it here */
- if (did_hibernate)
- enable_preemption();
-#endif
kprintf("ret from acpi_sleep_cpu hib=%d\n", did_hibernate);
#endif
#endif
}
+/*
+ * acpi_idle_kernel is called by the ACPI Platform kext to request the kernel
+ * to idle the boot processor in the deepest C-state for S0 sleep. All slave
+ * processors are expected already to have been offlined in the deepest C-state.
+ *
+ * The contract with ACPI is that although the kernel is called with interrupts
+ * disabled, interrupts may need to be re-enabled to dismiss any pending timer
+ * interrupt. However, the callback function will be called once this has
+ * occurred and interrupts are guaranteed to be disabled at that time,
+ * and to remain disabled during C-state entry, exit (wake) and return
+ * from acpi_idle_kernel.
+ */
+void
+acpi_idle_kernel(acpi_sleep_callback func, void *refcon)
+{
+ boolean_t istate = ml_get_interrupts_enabled();
+
+ kprintf("acpi_idle_kernel, cpu=%d, interrupts %s\n",
+ cpu_number(), istate ? "enabled" : "disabled");
+
+ assert(cpu_number() == master_cpu);
+
+ /* Cancel any pending deadline */
+ setPop(0);
+ while (lapic_is_interrupting(LAPIC_TIMER_VECTOR)) {
+ (void) ml_set_interrupts_enabled(TRUE);
+ setPop(0);
+ ml_set_interrupts_enabled(FALSE);
+ }
+
+ /*
+ * Call back to caller to indicate that interrupts will remain
+ * disabled while we deep idle, wake and return.
+ */
+ func(refcon);
+
+ acpi_idle_abstime = mach_absolute_time();
+
+ KERNEL_DEBUG_CONSTANT(
+ MACHDBG_CODE(DBG_MACH_SCHED, MACH_DEEP_IDLE) | DBG_FUNC_START,
+ acpi_idle_abstime, deep_idle_rebase, 0, 0, 0);
+
+ /*
+ * Disable tracing during S0-sleep
+ * unless overridden by sysctl -w tsc.deep_idle_rebase=0
+ */
+ if (deep_idle_rebase) {
+ save_kdebug_enable = kdebug_enable;
+ kdebug_enable = 0;
+ }
+
+ /*
+ * Call into power-management to enter the lowest C-state.
+ * Note when called on the boot processor this routine will
+ * return directly when awoken.
+ */
+ pmCPUHalt(PM_HALT_SLEEP);
+
+ /*
+ * Get wakeup time relative to the TSC which has progressed.
+ * Then rebase nanotime to reflect time not progressing over sleep
+ * - unless overriden so that tracing can occur during deep_idle.
+ */
+ acpi_wake_abstime = mach_absolute_time();
+ if (deep_idle_rebase) {
+ rtc_sleep_wakeup(acpi_idle_abstime);
+ kdebug_enable = save_kdebug_enable;
+ }
+ acpi_wake_postrebase_abstime = mach_absolute_time();
+ assert(mach_absolute_time() >= acpi_idle_abstime);
+
+ KERNEL_DEBUG_CONSTANT(
+ MACHDBG_CODE(DBG_MACH_SCHED, MACH_DEEP_IDLE) | DBG_FUNC_END,
+ acpi_wake_abstime, acpi_wake_abstime - acpi_idle_abstime, 0, 0, 0);
+
+ /* Like S3 sleep, turn on tracing if trace_wake boot-arg is present */
+ if (kdebug_enable == 0) {
+ if (wake_nkdbufs)
+ kdebug_trace_start(wake_nkdbufs, NULL, TRUE);
+ }
+
+ IOCPURunPlatformActiveActions();
+
+ /* Restart timer interrupts */
+ rtc_timer_start();
+}
+
extern char real_mode_bootstrap_end[];
extern char real_mode_bootstrap_base[];
__asm__("wbinvd");
}
+boolean_t
+ml_recent_wake(void) {
+ uint64_t ctime = mach_absolute_time();
+ assert(ctime > acpi_wake_postrebase_abstime);
+ return ((ctime - acpi_wake_postrebase_abstime) < 5 * NSEC_PER_SEC);
+}
projects / apple / xnu.git / blobdiff